Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Understanding Network VLANs

Virtual LANs or VLANs are virtual separations within a switch that provide distinct logical LANs that each behave if there were configured on a separate physical switch. Some Important points about VLANS.  All the servers connected with in a VLAN will have same broadcasting domain, and...

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Volume manager Migration from LVM to VxVM in Linux – Part 1

  We all know that storage is key requirement for any server environment and the requirement for storage is always dynamic in nature. When we talk about the cost, providing highly redundant storage to each server is most expensive task for any organization and no company...

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Deployment and understanding of LDOMS (Logical Domains)

Deployment and understanding of LDOMS (Logical Domains): Ldom technology allows us to allocate a system’s various resources such as memory, CPUs and devices (I/O,Networl interfaces etc) into logical groupings and create multiple, discrete systems each having their own operating system, resources, and identity within a single...

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Unix Quick Reference : ILOM ( Integrated Lights out Manager) Command Line

The X4000 Family implements the ILOM – Integrated Lights Out Manager.  This is a combination of dedicated hardware and supporting software. The Sun Fire X64 family of servers implement a technology called ILOM – Integrated Lights Out Manager where available. This is a combination of dedicated hardware...

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Linux Network Troubleshooting

Network connection problems include slow connections, as well as complete loss of connectivity. Factors that may cause slow connectivity include incorrectly configured domain name system (DNS) settings, inefficiently configured routing tables, inferior cabling, overloaded servers, and network congestion. The same set of factors, as well as...

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Solaris patching for new learners.

What is a patch? A patch fixes problems that prevent the proper execution of software. It is a collection of files and directories that replace or update existing files/binaries and directories. The entire OS is installed as a collection of Solaris packages. It is done during...

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Solaris SVM : Repartitioning Drives for Operating System Upgrade

Below instructions useful to deal with a common issue in upgrading an operating system (OS) where the existing partitions, which were fine for the operating system (OS) prior to upgrading, are not large enough to hold the same file systems of the new OS. As a example, one of...

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ZFS Patching with Zones using LU (Liveupgrade) in Solaris.

ZFS Patching with Zones using LU (Liveupgrade) in Solaris.  SOLARIS LIVE UPGRADE: Solaris Live Upgrade software enables the operating system to continue to run while upgrades, patch installations, or routine maintenance operations are performed. System administrators can patch a system image rapidly without impacting the boot...

 
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